.progress-bar {
  animation: indeterminate 1s infinite linear;
  transform-origin: 0% 50%;
}

@keyframes indeterminate {
  0% {
    transform: translateX(0) scaleX(0);
  }
  40% {
    transform: translateX(0) scaleX(0.4);
  }
  100% {
    transform: translateX(100%) scaleX(0.5);
  }
}
